The singer, who will release the tenth album of her career in June, invited the Australian to collaborate on the title track of her album, "AKA".

"I love her," said the rapper. I used to sit in my room when I was a girl and lip sync her music, so it's really cool to have a song with her on her new album," said Azalea.

So what is their new duet? She can’t tell us just yet, but Azalea did disclose, “She actually only asked me about two weeks ago, so I didn’t have to keep the secret for too long. "When I opened on tour for Beyoncé, I had to keep my mouth shut for months, which is really killed me. So this time is a breeze. "